Lesson 2 of 7 · Errors
Have a helpful 'Page not found' page
What it is
When an address doesn't exist, the server should answer with a real 404 status and show a friendly page with links to your main services and contact details.
Why it matters
A helpful 404 keeps a lost visitor on your site. A real 404 status also tells Google to drop dead pages instead of treating them as thin content.
✓ Good example
A 404 page with search, top services and the phone number.
✗ Common mistake
Missing pages show a blank screen, or show 'not found' while telling Google everything is fine (a 'soft 404').
You pass when: Fake addresses return a 404 status and a useful page.